> That link says that it has "no mini-pci slots"  so it doesn't look like 
> you could add wifi to it.  Am I mistaken, or could you do a USB wifi?
> 

I thought you were just talking about a router. For wi-fi you will 
probably want to go with the RB433, but you will be closer to a $150.00 
for the board, case, and antennas. Our company has many units like this 
in the field, but it may be overkill for a home network.

http://store.wisp-router.com/itemdesc.asp?ic=RB433&eq=&Tp=